Clairvoyant

The one who plays this trick must have an accomplice. The accomplice is
sent from the room. It is announced that the accomplice will name the
person pointed to. The demonstrator points at an individual and the
accomplice on the outside of the room gives the name of the individual
pointed at.

The Trick--The accomplice knows that the one last speaking before he
left the room will be the one pointed at by the demonstrator. In
pointing at an individual, the one doing the pointing asks of the
accomplice, "Does the spirit move?" The one on the outside answers, if
he knows who is being pointed at, "It does." The first speaker then
says, "Whom am I pointing at?" The accomplice then gives the
individual's name.